6552211509 has 6 divisors (see below), whose sum is σ = 9464305526. Its totient is φ = 4368141000.

The previous prime is 6552211459. The next prime is 6552211537. The reversal of 6552211509 is 9051122556.

It can be written as a sum of positive squares in only one way, i.e., 5206055409 + 1346156100 = 72153^2 + 36690^2 .

It is not a de Polignac number, because 6552211509 - 2¹² = 6552207413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6552211609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364011742 + ... + 364011759.

Almost surely, 2^6552211509 is an apocalyptic number.

It is an amenable number.

6552211509 is a deficient number, since it is larger than the sum of its proper divisors (2912094017).

6552211509 is a wasteful number, since it uses less digits than its factorization.

6552211509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728023507 (or 728023504 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 6552211509 is about 80945.7318763627. The cubic root of 6552211509 is about 1871.2391825646.

The spelling of 6552211509 in words is "six billion, five hundred fifty-two million, two hundred eleven thousand, five hundred nine".